I thought I'd post a list of philosophical/religious books that have had something of an impace on me. I'd like to see a list of some of yours, as well. Augustine. Confessions, City of God, The Teacher. Frankly, anything by Augustine is great. Rousseau, Jean-Jacques. Emile. It's a book on pedagogy and the philosophy of education. A welcome change from his more political writings. Wittgenstein, Ludwig. Tractatus Logico-Philosophicus, Philosophical Investigations. Probably the two most important books in 20th century philosophy. Kant, Immanuel. Critique of Pure Reason. Classic. Helmholtz, Hermann von. Physiological Optics. Berkeley, George. New Theory of Vision. Goethe, Johann. Remarks on Colour. James, William. Anything by William James is excellent. Same goes for John Dewey. Tolstoi, Leo. The Kingdom of God is Within You. Books that should never be read under any circumstance. If you own any of these books, they are to be used either as toilet paper or kindling: Anything by Ayn Rand. Anything by Richard Dawkins. All short-sighted, narrow-minded, and uttlerly uninspired.